公开(公告)号：US09065399B2

公开(公告)日：2015-06-23

申请号：US13918480

申请日：2013-06-14

Applicant: ALTERA CORPORATION

Inventor： Bonnie I. Wang ,  Weiqi Ding ,  Tim Tri Hoang ,  Richard Hernandez ,  Haidang Lin

IPC: H03F3/45 ,  H04L25/02 ,  H03K19/0185

CPC classification number: H03F3/45071 ,  H03K19/018514 ,  H03K19/018585 ,  H04L25/0272

Abstract: A voltage-mode differential driver is disclosed. The differential driver includes two driver arms, each driver arm including a variable-impedance driver for driving a single-ended output signal. Each variable-impedance driver comprises multiple driver slices, where each driver slice includes a pre-driver circuit and a driver circuit. Advantageously, it has been determined that the disclosed voltage-mode driver design requires less power than conventional current-mode drivers. In one implementation, the disclosed voltage-mode driver design provides the capability of independently programming the delay of the two single-ended outputs so as to compensate for differential skew. Other embodiments and features are also disclosed.

Abstract translation: 公开了一种电压模式差分驱动器。 差分驱动器包括两个驱动器臂，每个驱动臂包括用于驱动单端输出信号的可变阻抗驱动器。 每个可变阻抗驱动器包括多个驱动器片，其中每个驱动器片包括预驱动器电路和驱动器电路。 有利地，已经确定所公开的电压模式驱动器设计需要比常规电流模式驱动器更少的功率。 在一个实现中，所公开的电压模式驱动器设计提供独立编程两个单端输出的延迟的能力，以便补偿差分偏移。 还公开了其它实施例和特征。